ZTE ZXHN F623 up to 6.0.0P3T33 IPv6 denial of service

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
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CTI Interest Score
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5.9$0-$5k0.00

Summaryinfo

A vulnerability labeled as problematic has been found in ZTE ZXHN F623 up to 6.0.0P3T33. This affects an unknown function of the component IPv6 Handler. Executing a manipulation can lead to denial of service. This vulnerability is handled as CVE-2021-21727. The attack can be executed remotely. There is not any exploit available.

Detailsinfo

A vulnerability was found in ZTE ZXHN F623 up to 6.0.0P3T33. It has been declared as problematic. This vulnerability affects an unknown part of the component IPv6 Handler. The manipulation with an unknown input leads to a denial of service vulnerability. The CWE definition for the vulnerability is CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. As an impact it is known to affect availability.

The weakness was released 03/30/2021. The advisory is shared for download at support.zte.com.cn. This vulnerability was named CVE-2021-21727. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1499.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

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Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.9
VulDB Meta Temp Score: 5.9

VulDB Base Score: 4.3
VulDB Temp Score: 4.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Denial of service
CWE: CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

01/04/2021 🔍
03/30/2021 +84 days 🔍
03/30/2021 +0 days 🔍
04/06/2021 +7 days 🔍

Sourcesinfo

Vendor: zte.com.cn

Advisory: support.zte.com.cn
Status: Confirmed

CVE: CVE-2021-21727 (🔍)
GCVE (CVE): GCVE-0-2021-21727
GCVE (VulDB): GCVE-100-171916

Entryinfo

Created: 03/30/2021 07:29
Updated: 04/06/2021 13:18
Changes: 03/30/2021 07:29 (36), 04/06/2021 13:12 (2), 04/06/2021 13:18 (18)
Complete: 🔍
Cache ID: 216::103

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